[jboss-dev-forums] unable to open dsl file

[sridevi itla]

Hi,
   
  I am new to jboss drools.I have created some rules which are working sucessfully.I also have a decision tables example,which is working fine.However,when i try to open a dsl file,i am getting the following error message in eclipse.I initially used jars of drools 3.0.6 but now i am using jars of drools 4.0.I am getting the exception in both the cases.Could somebody please advice.
   
  eclipse.buildId=M20060921-0945
java.version=1.5.0_07
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Command-line arguments:  -os win32 -ws win32 -arch x86 -clean
  !ENTRY org.eclipse.jface 4 2 2007-06-26 15:55:00.825
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface".
!STACK 0
java.lang.NoClassDefFoundError: org/drools/lang/dsl/template/NLGrammar
 at java.lang.ClassLoader.defineClass1(Native Method)
 at java.lang.ClassLoader.defineClass(Unknown Source)
 at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:160)
 at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:498)
 at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:468)
 at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClassImpl(ClasspathManager.java:427)
 at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:410)
 at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:188)
 at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:334)
 at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:386)
 at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:347)
 at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83)
 at java.lang.ClassLoader.loadClass(Unknown Source)
 at java.lang.ClassLoader.loadClassInternal(Unknown Source)
 at org.drools.ide.dsl.editor.DSLEditor.init(DSLEditor.java:151)
 at org.eclipse.ui.internal.EditorManager.createSite(EditorManager.java:840)
 at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:583)
 at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:372)
 at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:566)
 at org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:214)
 at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2595)
 at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2528)
 at org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPage.java:2520)
 at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2505)
 at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
 at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2500)
 at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2485)
 at org.eclipse.ui.ide.IDE.openEditor(IDE.java:388)
 at org.eclipse.ui.ide.IDE.openEditor(IDE.java:350)
 at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:275)
 at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:139)
 at org.eclipse.jdt.internal.ui.actions.OpenActionUtil.open(OpenActionUtil.java:49)
 at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:190)
 at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:174)
 at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:267)
 at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:243)
 at org.eclipse.jdt.internal.ui.packageview.PackageExplorerActionGroup.handleOpen(PackageExplorerActionGroup.java:306)
 at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart$4.open(PackageExplorerPart.java:653)
 at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:817)
 at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
 at org.eclipse.core.runtime.Platform.run(Platform.java:843)
 at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:44)
 at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:149)
 at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:815)
 at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1069)
 at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1168)
 at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:249)
 at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:243)
 at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:283)
 at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
 at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928)
 at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3348)
 at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2968)
 at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1914)
 at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878)
 at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:419)
 at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
 at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:95)
 at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
 at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
 at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
 at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
 at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
 at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
 at org.eclipse.core.launcher.Main.run(Main.java:977)
 at org.eclipse.core.launcher.Main.main(Main.java:952)
   
   
  Regards
  Devs
   

 
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